Integrated control algorithm of ABS and AFS for automobile
An integrated control algorithm of antilock braking system ( ABS) and active front steering (AFS) system was proposed. A logic threshold control algorithm was used for ABS with the wheel angular acceleration as main threshold and the slip rate as auxiliary threshold. Based on a two degrees of freedom vehicle model, a combined control algorithm of sliding mode feedback control and yaw compensation feedforward control was used for AFS. The integrated control algorithm was evaluated by an 8 degrees of freedom vehicle model with 'Magic Formula' tire model and driver single-point preview model. The braking maneuver simulations of μ-split roads characterized by straight sections and bend sections with fixed curvature were performed with Matlab/Simulink to evaluate the algorithm validity. The simulation results show that the integrated control algorithm can significantly shorten the braking distance and enhance the vehicle steering stability in braking process.
ABSAFSintegrated controllogic thresholdfeedforward controlsliding mode control
国家科技期刊平台
NSTL
万方数据
维普
